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4902db2198
Closes #1671 Adds a `type_id` function to the `Extension` trait, allowing to properly store an retrieve boxed `Extensions`. --------- Co-authored-by: Bastian Köcher <git@kchr.de>
Substrate externalities abstraction
The externalities mainly provide access to storage and to registered extensions. Extensions are for example the keystore or the offchain externalities. These externalities are used to access the node from the runtime via the runtime interfaces.
This crate exposes the main [Externalities] trait.
License: Apache-2.0